Data Announcements

New MICROBASE Ensemble Data Set Available
Apr 28, 2015       
A new data set of ensemble cloud retrievals from the March 2000 intensive observational period at the Southern Great Plains Central Facility is now available in the ARM Data Archive evaluation area. The new data set uses the baseline cloud microphysical algorithm, known as MICROBASE, along with a variance-based method that varies the empirical parameters [...]

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Navigation Best Estimate Value-Added Product Released
Apr 27, 2015       
Developed in response to the first ship-based deployment of the second ARM Mobile Facility (AMF2), the Navigation Best Estimate (NAVBE) Value-Added Product (VAP) has been released for evaluation. Meteorological, cloud, and aerosol measurements were collected during nearly 20 round trips of the container ship, Horizon Spirit, between Los Angeles, CA, and Honolulu, HI, from September [...]

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AmeriFlux and Methane Evaluation VAP Now Available for Barrow Data
Apr 21, 2015       
Greenhouse gases (GHGs) are suspected to be key drivers of global climate change. As Arctic permafrost melts, it unlocks stored carbon, which may contribute to large increases in the atmospheric mixing ratios of these gases. Understanding the rates and controlling mechanisms of these releases is of great importance for climate prediction and modeling. The ARM Climate [...]

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New and Improved Ceilometer Datastream Available
Jan 26, 2015       
Recently, the datastream for the ceilometer instrument for all sites were reprocessed. This end-to-end reprocessing task corrected a couple of problems in the formatting of CEIL data and resulted in a new datastream name. First, the “V” in VCEIL was dropped because it represented the name of the vendor. New data standards for ARM require that [...]

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New MICROARSCL Evaluation Data Released for Barrow, Alaska
Jan 23, 2015       
A new evaluation release of 18 months of data from Barrow, Alaska, provides the first KAZR-based Micro-Active Remote Sensing of Clouds (MICROARSCL) data from this North Slope of Alaska (NSA) site. The addition of the KAZR data to the NSA site adds additional temporal and spatial resolution relative to the retired Millimeter Wavelength Cloud Radar [...]

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An Update of WACR-ARSCL: Evaluation VAP Data Available
Jan 23, 2015       
New data sets from the 95 GHz W-band ARM Cloud Radar-Active Remote Sensing of Clouds (WACR-ARSCL) are now available for download as an evaluation value-added product (VAP) for the ARM Mobile Facility (AMF) deployments in Hyytiälä, Finland, from February through September 2014, and Manacapuru, Brazil, from January through December 2014. Evaluation data have been previously [...]

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Droplet Number Concentration Value-Added Product Now Operational
Oct 20, 2014       
Cloud droplet number concentration is an important factor in understanding aerosol-cloud interactions. As aerosol concentration increases, it is expected that droplet number concentration will increase and droplet size will decrease for a given liquid water path. This will greatly affect cloud albedo as smaller droplets reflect more shortwave radiation; however, the magnitude and variability of [...]

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2D Best Estimate Data Sets From MC3E Now Available
Oct 14, 2014       
Data sets for the ARM Best Estimate 2-Dimensional Grid (ARMBE2DGRID) and Station-based Surface (ARMBESTNS) are now available for the Midlatitude Continental Convective Clouds Experiment (MC3E) period, which occurred during April to June 2011. The primary goal of these two data sets is to provide 2-dimensional (2D) spatial data of important surface variables to facilitate studies on [...]

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Large-Scale Forcing Data from the R/V Roger Revelle
Oct 10, 2014       
Constrained variational analysis forcing data centered at the R/V Roger Revelle are now available for the Dynamics of the Madden-Julian Oscillation (DYNAMO) and the ARM Madden-Julian Oscillation [MJO] Investigation Experiment [AMIE] on Gan Island, or AMIE-Gan field campaign. Due to the lack of a sounding array on the Revelle, these forcing data were developed based on [...]

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Large-Scale Forcing Data for AMIE-GAN Updated
Oct 08, 2014       
The ARM Madden-Julian Oscillation [MJO] Investigation Experiment [AMIE] on Gan Island, or AMIE-Gan field campaign collected necessary data for studies of the initiation, propagation, and evolution of MJO and its association with convective clouds. In order to enable single column and/or high-resolution model simulations of the field campaign period, model forcing data sets were developed. Three [...]

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High-Vertical Resolution Soundings Available for SGP and NSA
Sep 29, 2014       
The ARM External Data Center (XDC) now provides atmospheric soundings—vertical measurements of the atmospheric column—in 1-second resolutions collected by the National Weather Service (NWS) in netCDF format to the ARM Data Archive. Quality control is added by the University Corporation for Atmospheric Research. These weather balloon soundings record temperature, pressure, altitude, humidity, and winds for three [...]

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Microwave Radiometer Retrieval Data Available for AMF Sites
Jul 22, 2014       
The Microwave Radiometer Retrievals (MWRRET) value-added product (VAP) has now been processed for the following ARM Mobile Facility (AMF) deployments: Black Forest, Germany Shouxian, China Niamey, Niger, West Africa Graciosa Island, Azores. Preliminary data are also available for the MAGIC deployment of the AMF in the evaluation area of the ARM Data Archive. The MAGIC data do not currently include [...]

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